Twaróg, S., J. Szołtysek, K. Szwarc, and U. Boryczka. “Probabilistic Traveling Salesman Problem and Harmony Search Algorithms in Pharmacy Supply Optimization”. Acta Universitatis Lodziensis. Folia Oeconomica, vol. 6, no. 345, Dec. 2019, pp. 111-25, doi:10.18778/0208-6018.345.06.